CN102384303A - Cutoff valve control system - Google Patents
Cutoff valve control system Download PDFInfo
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- CN102384303A CN102384303A CN2010102679625A CN201010267962A CN102384303A CN 102384303 A CN102384303 A CN 102384303A CN 2010102679625 A CN2010102679625 A CN 2010102679625A CN 201010267962 A CN201010267962 A CN 201010267962A CN 102384303 A CN102384303 A CN 102384303A
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- stop valve
- pressure characteristics
- cylinder
- valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/16—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member
- F16K31/163—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member the fluid acting on a piston
- F16K31/1635—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member the fluid acting on a piston for rotating valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0647—Spindles or actuating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/3056—Assemblies of multiple valves
- F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
- F15B2211/3057—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve having two valves, one for each port of a double-acting output member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7053—Double-acting output members
- F15B2211/7054—Having equal piston areas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7758—Pilot or servo controlled
- Y10T137/7761—Electrically actuated valve
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8158—With indicator, register, recorder, alarm or inspection means
- Y10T137/8225—Position or extent of motion indicator
- Y10T137/8242—Electrical
Abstract
The invention provides a cutoff valve control system capable of reliably diagnosing and forecasting the failure of a constituent part and the like of the system through action test in the setup. The cutoff valve control system is provided with a judging mechanism (7) and a storage mechanism (7), wherein the judging mechanism (7) is used for judging the normality/abnormality of the system based on the pressure characteristic of cylinder body inner pressure actually measured by a pressure sensor (6) under the situation of carrying out air supply from an air supply source (11) to a cylinder body (31) of an air cylinder (3); and the storage mechanism (7) is used for storing the pressure characteristic of the cylinder body inner pressure when the system normally acts at the initial stage and the pressure characteristic at a fault forecast boundary in advance. Under the situation that the actually-measured pressure characteristic is within the scope between the pressure characteristic in the normal action and the pressure characteristic at the failure forecast boundary, the normality is judged by the judging mechanism (7); and under the situation that the actually-measured pressure characteristic is beyond the scope between the pressure characteristic in the normal action and the pressure characteristic at the failure forecast boundary, the abnormality is judged.
Description
Technical field
The present invention relates to the stop valve control system.
Background technique
For the pipeline of oil in the factory installation or combustion gas etc.,, be provided with the stop valve that constitutes by ball valve etc. for urgency stop circuit under the unusual situation takes place at equipment.Stop valve is test and is confirmed having or not of fault by the frequency of 1 year 1 degree implement the to stop work full its stroke of (from the standard-sized sheet to the full cut-off) after being provided with to factory installation.
Yet, the stop valve full cut-off need be stopped factory and brings obstacle can for running usually, so can't in turning round usually, carry out the action test of stop valve.So the claimant is developing and need not stop factory just can carrying out stop valve in common running action and test and diagnose, predicted trouble-free stop valve control system.
Patent documentation 1: TOHKEMY 2009-092110 communique
Yet; Technology for the fault diagnosis of the stop valve control system after being provided with is developed; But consider and when pipeline of factory installation etc. is provided with emergency trip valve, also need carry out fault diagnosis, also require to develop for the fault diagnosis technology of this situation.
Promptly; When pipeline that is set to factory installation etc.; Stop valve control system by stop valve and control system constitute is carried out various settings, but need to implement investigation when this is set whether the action of regular event test, each component parts of diagnostic system has fault-free.
Summary of the invention
Problem of the present invention be the action when setting test reliably diagnose, the stop valve control system of the fault of the component parts of predicting system etc.
Technological scheme 2 described inventions are in technological scheme 1 described stop valve control system; It is characterized in that; Above-mentioned decision mechanism (7); Based on to the energising of above-mentioned solenoid valve (5) constantly or the Pressure characteristics of above-mentioned actual measurement that is carved into action zero hour of above-mentioned cylinder (3) when having a power failure judge above-mentioned solenoid valve (5) normal/unusual; Based on the Pressure characteristics of the above-mentioned actual measurement of the action zero hour from action zero hour of above-mentioned cylinder (3) to above-mentioned stop valve (1) judge above-mentioned cylinder (3) normal/unusual, based on the Pressure characteristics of the above-mentioned actual measurement after action zero hour of above-mentioned stop valve (1) judge above-mentioned stop valve (1) normal/unusual.
Technological scheme 4 described inventions are a kind of stop valve control system; This stop valve control system possesses stop valve (1) and control mechanism; This control mechanism have this stop valve of Spin Control (1) valve shaft (1b) cylinder (3) and carry out supplying with and the solenoid valve (5) of exhaust to the air of the cylinder body (31) of this cylinder (3) from air supply source (11); And control the aperture of above-mentioned stop valve (1); It is characterized in that possessing: pressure transducer (6), this pressure transducer detect the interior pressure of above-mentioned cylinder body (31); Decision mechanism (7); This decision mechanism be based on through the control of above-mentioned control mechanism carried out from above-mentioned air supply source (11) under the situation that the air of the above-mentioned cylinder body (31) of above-mentioned cylinder (3) is supplied with, by above-mentioned pressure transducer (6) actual measurement to above-mentioned cylinder body in the Pressure characteristics of pressing, decision-making system normal/unusually, storing mechanism (7); The Pressure characteristics that this storing mechanism is pressed in the above-mentioned cylinder body the during regular event at the initial stage of storage system in advance and the Pressure characteristics on failure prediction border, and display device (12); Above-mentioned decision mechanism (7); Be judged to be under the situation in the scope between the Pressure characteristics on Pressure characteristics when the Pressure characteristics of above-mentioned actual measurement is in above-mentioned regular event and above-mentioned failure prediction border normally, be judged to be unusual under the situation beyond the scope between the Pressure characteristics on Pressure characteristics when being in above-mentioned regular event and above-mentioned failure prediction border; Pressure characteristics when aforementioned display device (12) shows the regular event at initial stage of the Pressure characteristics of above-mentioned actual measurement, said system that above-mentioned storing mechanism is stored and the Pressure characteristics on failure prediction border.
Technological scheme 6 described inventions are a kind of stop valve control system; This stop valve control system possesses stop valve (1) and control mechanism; This control mechanism have this stop valve of Spin Control (1) valve shaft (1b) cylinder (3) and carry out supplying with and the solenoid valve (5) of exhaust to the air of the cylinder body (31) of this cylinder (3) from air supply source (11), and control the aperture of above-mentioned stop valve (1), it is characterized in that; Possess: displacement detecting mechanism (8); This displacement detecting mechanism detects the displacement of the valve shaft of above-mentioned stop valve (1), and decision mechanism (7), this decision mechanism are based on through the control of above-mentioned control mechanism and have carried out from above-mentioned air supply source (11) under the situation that the air of the above-mentioned cylinder body (31) of above-mentioned cylinder (3) is supplied with, by the detected placement property of above-mentioned displacement detecting mechanism (8); Decision-making system normal/unusual; Storing mechanism (7), this storing mechanism be the placement property the during regular event at the initial stage of storage system and the placement property on failure prediction border in advance, and display device (12); Above-mentioned decision mechanism (7); Be judged to be under the situation in the scope between the placement property on placement property when the placement property of above-mentioned actual measurement is in above-mentioned regular event and above-mentioned failure prediction border normally, be judged to be unusual under the situation beyond the scope between the placement property when placement property that is in above-mentioned failure prediction border and above-mentioned fault; Placement property when aforementioned display device (12) shows the regular event at initial stage of the placement property of above-mentioned actual measurement, said system that above-mentioned storing mechanism is stored and the placement property on failure prediction border.
In addition, the explanation of mechanism that is used for solving above-mentioned problem is with corresponding with reference to reference character with reference to the constituting component of reference character and the following explanation that is used for carrying out an invention of bracket mark, but they do not limit the explanation of claims.
According to technological scheme 1 described invention; Since carry out from the air supply source under the situation that the air of the cylinder body of cylinder is supplied with by the pressure transducer actual measurement to cylinder body in be judged to be under the situation in the scope the Pressure characteristics on the Pressure characteristics of pressing Pressure characteristics and the failure prediction border when being in regular event normal; Be judged to be unusual under the situation beyond the scope between the Pressure characteristics on Pressure characteristics when being in regular event and failure prediction border; So;, the pipeline of factory installation etc. carrying out the confirming operation test when being provided with, fault that can decision-making system/unusual.
According to technological scheme 2 described inventions; Since decision mechanism based on to the energising of solenoid valve constantly or the Pressure characteristics of actual measurement that is carved into action zero hour of cylinder when having a power failure judge solenoid valve normal/unusual; Based on the Pressure characteristics of the actual measurement of the action zero hour from action zero hour of cylinder to stop valve judge cylinder (3) normal/unusual; Based on the Pressure characteristics of the actual measurement after action zero hour of stop valve judge stop valve normal/unusual; So, constituting component (solenoid valve, cylinder, stop valve) that can decision-making system separately normal/unusual.
According to technological scheme 3 described inventions; Because decision mechanism; Under the situation that the gradient of the Pressure characteristics during regular event beyond the scope between the Pressure characteristics the when Pressure characteristics of the actual measurement after action zero hour of stop valve is in regular event and the Pressure characteristics on failure prediction border, after action zero hour of the gradient of this Pressure characteristics and stop valve equates; It is normal and cylinder is unusual to be judged to be stop valve; So, normal, the cylinder of the stop valve of constituting component that can decision-making system unusual.
According to technological scheme 4 described inventions; Because the Pressure characteristics the during regular event at the Pressure characteristics of display device demonstration actual measurement, the initial stage of system and the Pressure characteristics on failure prediction border; So; Where are regular event zone that Pressure characteristics when actual measured value that can the Visual Confirmation Pressure characteristics is positioned at by regular event and the Pressure characteristics on failure prediction border are represented and dangerous play zone, can carry out more detailed failure prediction.
According to technological scheme 5 described inventions; Owing to be judged to be normal under the situation in the scope between the placement property when the placement property of the actual detected of carrying out being measured by displacement detecting mechanism under the situation that the air of the cylinder body of cylinder is supplied with from the air supply source is in regular event and the placement property on failure prediction border; Be judged to be unusual under the situation beyond the scope between the placement property on placement property when being in regular event and failure prediction border; So, fault that can decision-making system/unusual.
According to technological scheme 6 described inventions; Because the placement property the during regular event at the placement property of display device demonstration actual measurement, the initial stage of system and the placement property on failure prediction border; So; Where are regular event zone that placement property when actual measured value that can the Visual Confirmation placement property is positioned at by regular event and the placement property on failure prediction border are represented and dangerous play zone, can carry out more detailed failure prediction.
Description of drawings
Fig. 1 representes a mode of execution of stop valve control system of the present invention, (A) is plan view, (B) is partial sectional view.
Fig. 2 is the pie graph of formation of cylinder and solenoid valve of a mode of execution of the stop valve control system of expression invention.
Fig. 3 is the skeleton diagram of electric formation of a mode of execution of the stop valve control system of expression invention.
Fig. 4 is the plotted curve of Pressure characteristics of interior pressure of cylinder of a mode of execution of the stop valve control system of expression invention.
Fig. 5 is the partial enlarged drawing of the plotted curve of Fig. 4.
Fig. 6 is the flow chart of order of fault diagnosis of a mode of execution of the stop valve control system of explanation invention.
Fig. 7 is the pie graph of formation of cylinder and solenoid valve of other mode of executions of the stop valve control system of expression invention.
Fig. 8 is the plotted curve of placement property of position meter of other mode of executions of the stop valve control system of expression invention.
Description of reference numerals
1 stop valve
3 cylinders (part of control mechanism)
5 solenoid valves (part of control mechanism)
The big flow three-way magnetic valve of 5A
5B small flow three-way magnetic valve
6 pressure transducers
7 microcomputers (decision mechanism, storing mechanism)
8 positions meters (displacement detecting mechanism)
Embodiment
Below, with reference to accompanying drawing an embodiment of the invention are described.
Fig. 1 representes the formation of stop valve control system of the present invention, (A) is plan view, (B) is partial sectional view.The stop valve control system possesses: stop valve 1; The cylinder 3 that is installed in the top of stop valve 1, the aperture of stop valve 1 is controlled via tie-down yoke portion 2; Be installed in the position case 4 of room external form or explosion-proof type structure on the top of cylinder 3.In the case 4 on the throne, solenoid valve 5, pressure transducer (electronic digital pressure meter) 6, microcomputer (below be called microcomputer) 7, position meter 8, power supply 10 and display device 12 etc. have been taken in.Control mechanism in cylinder 3 and solenoid valve 5 and the claim is suitable, and decision mechanism and storing mechanism in microcomputer 7 and the claim are suitable, and the displacement detecting mechanism in position meter 8 and the claim is suitable.
That kind as shown in Figure 2, cylinder 3 are provided with the pair of pistons 33 and 34 that is linked by piston rod 32 in the cylinder body 31 of one action air type.One side's piston 33 is through the active force of the helical spring 35 in the end that is provided in cylinder body 31, always towards closing valve direction (among Fig. 2 right-hand to) slidably by the application of force.The opposing party's piston 34, through from sending into the air that the exit orifice OUT of mouthfuls 36 solenoid valves 5 that are connected supplies with the air of the other end that is arranged on cylinder body 31, resist helical spring 35 active force and to valve opening position (left among Fig. 2 to) slidably by the application of force.On piston rod 32, be provided with to-and-fro motion with this piston rod 32 and convert the transfer mechanism 37 that rotatablely moves and transmit to valve shaft 1b to.Transfer mechanism 37 has the bifilar snap-latch piece 37b of engagement pin 37a that is based in piston rod 32 and the upper end portion that is installed in valve shaft 1b; The front end of bifilar snap-latch piece 37b is engaged with engagement pin 37a, and through the move left and right of engagement pin 37a, bifilar snap-latch piece 37b rotates; Thus, valve shaft 1b revolves and turn 90 degrees.
Fig. 3 is the skeleton diagram of the electric formation of expression stop valve control system.The stop valve control system is connected solenoid valve 5, pressure transducer 6, microcomputer 7, position meter 8 and display device 12 with power supply 10.Pressure transducer 6 detects interior pressure of the cylinder body of sending into mouthful 36 sides of cylinder 3, and testing signal is supplied with to microcomputer 7.Position meter 8 detects the rotational position of valve shaft 1b, and testing signal is supplied with to microcomputer 7.Microcomputer 7 carries out the solenoidal energising control of solenoid valve 5, and the testing signal of pressure transducer 6 and position meter 8 performed calculations handles normal/fault of decision-making system, by outside carry-out part 9 output decision signals.
The present invention is in the stop valve control system of above-mentioned formation; In the action test when setting; From solenoid valve 5 air supplies stop valve 1 is closed to the valve evolution to action from valve; The timeliness of pressing in the cylinder body of the cylinder 3 of observation this moment changes (below be called Pressure characteristics), the fault of the each several part of predicting system (solenoid valve 5, cylinder 3 and stop valve 1) thus.
Below, describing with regard to the Forecasting Methodology of fault, this describes with regard to the common action of stop valve control system before this.
At first, the switching of cylinder 3 is with being provided with two valves (big flow three-way magnetic valve 5A and small flow three-way magnetic valve 5B) that become three-way valve in solenoid valve 5 is in a main body.Thereby, use big flow three-way magnetic valve 5A usually.At this moment, small flow three-way magnetic valve 5B is controlled so as to power down mode, becomes all hole plug states of closing all in three holes.Big flow three-way magnetic valve 5A and small flow three-way magnetic valve 5B, the mode that becomes power down mode with the opposing party's when a side solenoid valve is switched on solenoid valve is carried out electrical interlocks by the control of microcomputer 7, so the situation that both become "on" position simultaneously can not occur.
When the solenoid A of big flow three-way magnetic valve 5A be power down mode, when solenoid B is switched on; Supply to cylinder body 31 via big flow three-way magnetic valve 5A and through common exit orifice OUT by sending into mouthfuls 36 from the common inlet opening IN of solenoid valve 5 from the air of air supply source 11; Piston 34 direction left slides, and stop valve 1 becomes full-gear.Thus, in process, can carry out the running of pipeline to solenoid B energising.In addition, in big flow three-way magnetic valve 5A, in to the process of an adverse, the mode of other adverse is not carried out electrical interlocks by the control of microcomputer 7.
Then; When based on the operation signal of the anomaly detection signal of factory installation or not shown urgency stop switch during by 7 pairs of solenoid A energisings of microcomputer; Air in the cylinder body 31 from the exit orifice OUT of solenoid valve 5 via big flow three-way magnetic valve 5A from common exhaust port EXH to atmospheric exhaust; Through load on spring piston 34 is slided from left to right, valve shaft 1a revolves and turn 90 degrees, and stop valve 1 becomes full-shut position.Thus, in the process to solenoid A energising, pipeline is by urgency stop.
In addition; In above-mentioned action; Any side among solenoid A or the B is controlled so as to always energising, but as other embodiments, when keep solenoid A be in power down mode, when solenoid B energising is also had a power failure solenoid B after becoming standard-sized sheet; Big flow three-way magnetic valve 5A becomes all hole plug states, and stop valve 1 keeps full-gear; When keep solenoid B be in power down mode, when solenoid A energising is also had a power failure solenoid A after becoming full cut-off; Become all hole plug states; Stop valve 1 keeps full-shut position, so, like this; In when becoming full-gear or during full-shut position, solenoid A and B both sides' control are become power down mode, also can alleviate power consumption.
Action during action test when then, just comprising the setting of failure prediction describes.When the action test, use small flow three-way magnetic valve 5B.
During setting when pipeline is provided with; When stop valve 1 is in full-shut position; Operation signal based on not shown action test switch; The solenoid C energising of 7 pairs of small flow three-way magnetic valves of microcomputer 5B, then big flow three-way magnetic valve 5A is controlled so as to power down mode, becomes all hole plug states of closing all in three holes.And, from the air of air supply source 11 from the common inlet opening IN of solenoid valve 5 via small flow three-way magnetic valve 5B, be fed in the cylinder body 31 by sending into mouthfuls 36 from common exit orifice EXH.Thus, piston 34 overcomes load on spring and slides from right to left, and stop valve 1 moves to opening direction from full-shut position.
At this moment,, when full-shut position is moved full-gear, stop, meanwhile solenoid D being switched at stop valve 1 to the energising of solenoid C.
When solenoid D is switched on, the air in the cylinder body 31 via send into mouthfuls 36, the exit orifice OUT of solenoid valve 5, small flow three-way magnetic valve 5B from common exhaust port EXH to atmospheric exhaust.Thus, piston 34 slides through load on spring from left to right, and valve shaft 1a revolves and turn 90 degrees, and stop valve 1 turns back to full-shut position.In addition, in small flow three-way magnetic valve 5B, in to the process of an adverse, the mode of other adverse is not carried out electrical interlocks by the control of microcomputer 7.
Like this; When the action test when setting; Measure the timeliness of pressing in the cylinder body of the cylinder 3 when making stop valve 1 move full-gear based on the testing signal of pressure transducer 6 and change (below be called Pressure characteristics), carry out fault verification based on the passing of the Pressure characteristics of being measured from full-shut position.Specifically; Will the actual measurement of when test action to Pressure characteristics and the storage that is stored in microcomputer 7 in advance in the regular event at initial stage the time Pressure characteristics (curve A among the Fig. 4 that afterwards states) and the Pressure characteristics (the failure prediction boundary line B1 among the Fig. 4 that afterwards states, B2, B3) on failure prediction border compare, carry out fault verification through this comparative result.
The Pressure characteristics (curve A among Fig. 5) during about the regular event at initial stage and the Pressure characteristics (the failure prediction boundary line B1 among Fig. 5, B2, B3) on failure prediction border are tried to achieve as following.
In cylinder body, press the action of the cylinder 3 that changes to describe to following; When stop valve 1 is transferred to full-gear from full-shut position; Through by sending into mouthful 36 air fed supply pressures, be D if establish the diameter of piston 34, then the compression area Ac of piston 34 becomes π D
2/ 4, the power of generation becomes presses P in compression area Ac * cylinder body.On the other hand, when the 35 moving displacement x ground of the helical spring with spring constant k were out of shape, load on spring became kx.
So; If quality, starting resistance (surface friction drag), displacement, speed and the acceleration of piston is made as m, C, x ', x respectively " words; then become (mx "+Cx '+kx)＜(during P * Ac); Piston 34 moves from the right side to the left, and the ball valve 1a of the stop valve 1 that link this moment is to opening the direction rotation.When the displacement x of the piston 34 of cylinder body 31 moved with maximum moving distance to the left, the ball valve 1a of stop valve 1 revolved and turn 90 degrees and become full-gear to opening direction.
Then, when stop valve 1 turns back to full-shut position from full-gear, be the state of standard-sized sheet from stop valve 1, the air in the cylinder body 31 is discharged into atmosphere via small flow three-way magnetic valve 5B.Kx＞{ (during P * Ac)+mx "+Cx ' }, piston 34 moves from the left side to the right, and the ball valve 1a of the stop valve 1 that link this moment rotates to closing direction becoming.When the displacement x of the piston 34 of cylinder body 31 moved with maximum moving distance to the right, the ball valve 1a of stop valve 1 revolved to closing direction and turn 90 degrees and become full-shut position.
Like this; The full-shut position from stop valve 1 when utilizing small flow three-way magnetic valve 5B changes to the full its stroke validation test of full-gear; When the running in of the pipeline that the stop valve control system is arranged at factory installation, implement; The timeliness of pressing in the cylinder body of the cylinder 3 of actual measurement this moment changes, and the Pressure characteristics the during regular event at the initial stage when setting stores in the storage (storing mechanism) of microcomputer 7 in advance thus.
(equation of motion) mx "+Cx '+P * Ac=kx... (1)
Wherein, m: the piston mass of cylinder 3, C: the starting resistance of cylinder 3, x: the displacement of cylinder 3, x ': the speed of cylinder 3, x ": the acceleration of cylinder 3, P: press Ac: the cylinder body compression area of cylinder 3 in the cylinder body of cylinder 3.
(equation of state) dP/dt=(R θ a/Vc) G-(P/Vc) is (d θ c/dt) (dV/dt)+(WR/Vc) ... (2)
Wherein, R: the gas constant of air, θ a: the inboard wall of cylinder block temperature of cylinder 3 (identical), Vc: the cylinder body volume of cylinder 3, G: the mass flow rate of air, W: the gaseous mass of air, θ c: air temperature in the cylinder body of cylinder 3 with the environment temperature of cylinder body periphery.In addition, θ a is based on that temperature detection signal from not shown temperature transducer measures by microcomputer 7.In addition, θ c tries to achieve through calculating according to pressure and boyle-Charles law in cylinder body volume and the cylinder body.
G＝kg·Qn...(3)
Wherein, kg: coefficient, Qn: the volume flowrate of air (standard state).Volume flow Q n is tried to achieve by the formula of following emission flow.
(formula of emission flow) (Pa/P)＜0.528 o'clock, Qn=11.1SePc √ (θ o/ θ c) ... (4)
Wherein, Pa: atmospheric pressure, Se: the effective cross-sectional area of small flow three-way magnetic valve 5B, θ o: standard state air temperature (273 ° of K).
(Pa/P) >=0.528 o'clock, Qn=22.2Se √ Pa (P-Pa) √ (θ o/ θ c) ...
(5)
(thermal equation of energy formula) d θ c/dt=(R θ c/CvW) G+ (hSh/CvW) (θ a-θ c) ... (6)
Wherein, Cv: the long-pending surely specific heat of air, h: the heet transfer rate of inboard wall of cylinder block and air, Sh: inboard wall of cylinder block surface area.
Fault diagnosis finally be with through be suitable for cylinder body in press the characteristic of pressure (the interior pressure of cylinder body)-time that the above-mentioned equation of state (2) of each parameter that the actual measured value that changes (Pressure characteristics) calculates identically tries to achieve to judge.Do not change the temperature variation that produces owing to only in equation of state (2), consider to press in the cylinder body, so, use thermal equation of energy formula (6) to carry out the temperature correction.Till when the operation of action test switch plays constantly that stop valve 1 is actual to begin to move and from the full cut-off of stop valve 1 play press 0MPa in the cylinder body till, the displacement x of equation of motion=0, so, only be suitable for equation of state (2) and thermal equation of energy formula (6).
When the above-mentioned equation of state (2) that will be suitable for each parameter that calculates was illustrated in the plotted curve, the Pressure characteristics the during regular event at the initial stage during setting was represented by the curve A of Fig. 4.Pressure characteristics during the regular event at the initial stage of this curve A when setting is stored in the storage of microcomputer 7 in advance.
In curve A; Constantly t1 representes to move the moment that test switch connection, small flow solenoid valve 5b energising, small flow solenoid valve 5B begin to move; T2 representes the action zero hour of cylinder 3 constantly; T3 representes the action zero hour of stop valve 1 constantly, and t4 representes that stop valve 1 becomes the moment of full-gear constantly.
At moment t1; Action through small flow solenoid valve 5b begins, and air is that a certain amount of mode begins to supply with to cylinder body 31 with time per unit, but piston 34 is because the influence of starting resistance etc. and do not begin as yet to move; So; Press the certain supply that relies on from the air of small flow three-way magnetic valve 5B in the T1 during till from moment t1 to moment t2, cylinder body, increase gradually linearly from pressure zero (barometric pressure).
At moment t2, piston 34 begins action and moves to the left from the right side, and stop valve 1 is to opening the direction action.When piston 34 began to move, the inner space of air fed cylinder body 31 enlarged, thereby, till from moment t2 to moment t3 during T2, T1 slows down and increases gradually linearly during the rake ratio of the variation in pressure of pressing in the cylinder body.
At moment t3, stop valve 1 begins action and moves to opening direction from full-shut position.When stop valve 1 begins to move because its action resistance, till from moment t3 to moment t4 during T3, T2 becomes anxious during the rake ratio of the variation in pressure of pressing in the cylinder body, but than during T1 slow down, increase gradually linearly.
What the Pressure characteristics of pressing in the cylinder body the during regular event therefore, represented by solid line A appeared is in the such characteristic of each broken line plotted curve that bends constantly from moment t1 to moment t4.In addition, the moment of Pressure characteristics bending (t2, t3 constantly) can be held as the change point of the gradient of the Pressure characteristics in during before and after it.
On the other hand; Under the situation that small flow solenoid valve 5B breaks down, the action of small flow solenoid valve 5B is slack-off, lacks when becoming than regular event from the supply of the air of air supply source 1; So, press when becoming low in the cylinder body during being contemplated among the T1 than general regular event.Thereby, during T1, the curve A during with respect to regular event, regulation are set the failure prediction boundary line B1 that representes as by dotted line than certain admissible value of curve A pressure step-down.
In addition, under the situation that cylinder 3 breaks down, the increase of the fixed or slip resistance that the liner of the piston 34,33 of anticipation cylinder 3 causes because of long-term deterioration etc., so, press height when becoming in the cylinder body during being contemplated among the T2 than general regular event.Thereby, during T2, the curve A during with respect to regular event is stipulated the certain admissible value higher than curve A pressure, sets the failure prediction boundary line B2 that representes as by dotted line.
In addition, under the situation that stop valve 1 breaks down, anticipation seat pad pad 1c or lid are pressed the increase of the action resistance that liner 1d causes because of long-term deterioration etc., so, press height when becoming in the cylinder body during being contemplated among the T3 than general regular event.Thereby, during T3, the curve A during with respect to regular event is stipulated the certain admissible value higher than curve A pressure, sets the failure prediction boundary line B3 that representes as by dotted line.
Thereby, will by during the Pressure characteristics represented of the failure prediction boundary line B1, B2, the B3 that set among T1～T3 store into equally in advance in the storage of microcomputer 7.And; Pressure characteristics shown in the curve A in the time of will be by regular event and be made as the regular event zone by the scope between the Pressure characteristics shown in failure prediction boundary line B1, B2, the B3; Pressure characteristics when being in regular event and by under the situation beyond the scope between the Pressure characteristics shown in failure prediction boundary line B1, B2, the B3 is made as the dangerous play zone.
For example, in Fig. 4, during be the dangerous play zone with the region D A1 shown in the hacures, DA2, DA3 respectively among T1, T2 and the T3.If the actual measured value of pressing in the cylinder body during T1 be in the words of dangerous play region D A1; The action of then representing solenoid valve is slack-off and be unusual; If during T2 be in the words of dangerous play region D A2; Then represent the fixed of cylinder 3 or move slack-off cause unusual, if during T3 be in dangerous play region D A3, then represent the fixed of stop valve 1 (mainly being that seat pad pad 1c or lid are pressed liner 1d part) or slack-off cause unusual that move.
As stated, when the setting of stop valve control system, the Pressure characteristics shown in the curve A in the time of will be by regular event and store in advance in the storage of microcomputer 7 by the Pressure characteristics shown in failure prediction boundary line B1, B2, the B3.
Then; When the stop valve control system is set to factory installation; Action test when implementing the setting of stop valve control system; Make stop valve 1 transfer to the confirming operation test of full-gear from full-shut position, the force value of pressing in the cylinder body based on the cylinder 3 of testing signal actual measurement this moment of pressure transducer 6 stores the Pressure characteristics that is measured in the storage of microcomputer 7.
Then, by 7 pairs of actual measurements of microcomputer to Pressure characteristics and in advance the curve A when the regular event at the initial stage that the storage of microcomputer 7 is stored and curve B 1, B2, the B3 on failure prediction border compare, carry out the judgement that fault has or not.Result of determination is divided into normal and unusual two stages.
If actual measurement to Pressure characteristics be in the regular event zone between curve A and curve B 1, B2, the B3, then be judged to be normally.The stop valve control system is being judged to be under the normal situation, after for example can use 1 year from this moment.
On the other hand, if actual measurement to Pressure characteristics be in the dangerous play zone beyond the scope between curve A and curve B 1, B2, the B3, be judged to be unusually.Be judged to be under the unusual situation, need carrying out maintenance or parts, the new product of solenoid valve 5, cylinder 3 or stop valve 1 and change.
In addition, result of determination can be exported to the outside with the electric signal of for example DC4～20mA by outside carry-out part 9 from microcomputer 7.In addition, the Pressure characteristics of curve A, failure prediction boundary line B1, B2, B3 and actual measurement when display device 12 shows regular events, together Visual Confirmation normal/unusual result of determination.Utilize the demonstration of display device 12, where regional the actual measured value of Visual Confirmation Pressure characteristics be positioned at by regular event zone shown in curve A, B1, B2, the B3 and dangerous play, can carry out the prediction of fault thus.
Then, describe with reference to the flow chart of Fig. 6 order above-mentioned fault diagnosis.At first, the Pressure characteristics of pressing in the cylinder body when measuring regular event is arranged at the stop valve control system of standard the pipeline (step S1) of factory installation.Then; When the running in of factory installation; Stop valve 1 when enforcement has utilized small flow three-way magnetic valve 5B from full-shut position to the full its stroke validation test that becomes full-gear; The timeliness of pressing in the cylinder body of the cylinder 3 of actual measurement this moment changes, based on above-mentioned each equation, and the Pressure characteristics (curve A of Fig. 4) during with the regular event at initial stage and on this Pressure characteristics, adding in the storage that the failure prediction boundary line B1, B2, the B3 that set on admissible value ground store microcomputer 7 into (step S2).
Then; In the storage that Pressure characteristics (curve A of Fig. 4) during the regular event at the initial stage that will be measured to by the stop valve control system of above-mentioned standard and failure prediction boundary line B1, B2, B3 store microcomputer 7 in advance into, to the stop valve control system of client's delivery; Be set to the pipeline of client's factory installation; The confirming operation test of the action test usefulness when implementing to set, the Pressure characteristics (step S3) of pressing in the cylinder body of actual measurement cylinder 3.Then; To the storage of microcomputer 7 stored pressure characteristic (curve A of Fig. 4 and failure prediction boundary line B1, B2, B3) and actual measurement in advance to Pressure characteristics compare, carry out two stages the judgement (step S4) of (normal and unusual) by microcomputer 7.
Then, as the result of determination of step S4, if actual measurement to Pressure characteristics be in the regular event zone between curve A and curve B 1, B2, the B3, then be judged to be normal (step S5).Be judged to be under the normal situation, the stop valve control system is owing to being the regular event product, so can use for example after 1 year.
On the other hand, as the result of determination of step S4, if actual measurement to Pressure characteristics be in the dangerous play zone beyond the scope between curve A and curve B 1, B2, the B3, then be judged to be unusual (step S6).At this moment, utilize the demonstration of display device 12, how and where be positioned at the dangerous play zone actual measured value of Visual Confirmation Pressure characteristics can carry out the prediction of fault thus.Be judged to be under the unusual situation, need carrying out maintenance or the parts of cylinder 3, stop valve 1, small flow three-way magnetic valve 5B etc., the replacing of new product.
For example; In Fig. 4; The actual measured value of the Pressure characteristics during being judged to be among the T1 is under the situation of dangerous play region D A1, is judged to be the fault of solenoid valve 5, in addition; Where be positioned at dangerous expression region D A1 through the actual measured value that shows Pressure characteristics, can predict the intensity of anomaly of solenoid valve 5.Equally, the actual measured value of the Pressure characteristics during being judged to be among the T2 is positioned under the situation of dangerous play region D A2, is judged to be the fault of cylinder 3; In addition; Where be positioned at dangerous expression region D A2 through the actual measured value that shows Pressure characteristics, can predict the intensity of anomaly of cylinder 3, the actual measured value of the Pressure characteristics during being judged to be among the T3 is under the situation of dangerous play region D A3; Be judged to be the fault of stop valve 1; In addition, where be positioned at dangerous expression region D A3, can predict the intensity of anomaly of stop valve 1 through the actual measured value that shows Pressure characteristics.Unusual (fault) in the stop valve 1 mainly relies on seat pad pad 1c or lid to press the situation of liner 1d deterioration partly more, so need change these parts.
In addition; That kind for example shown in Figure 5; Even during the actual measured value of Pressure characteristics among the T3 be presented under the situation of dangerous play region D A3, the curve A ' that kind shown in the single-point line, in being shown as dangerous play region D A3 with the situation of curve A almost parallel under; It is normal to predict stop valve 1, cylinder 3 faults.This be because, if during the variation in pressure of actual measured value among the T3 be the identical variation in pressure of Pressure characteristics during with regular event, then can be judged as stop valve 1 regular event.Such prediction during T2 can carry out too; Even during the actual measured value of Pressure characteristics among the T2 be presented under the situation of dangerous play region D A2; When being shown as in dangerous play region D A2 with the curve A almost parallel; It is normal to be judged to be cylinder 3, and small flow solenoid valve 5 is unusual.
In step S6, be judged to be under the unusual situation, then, the disposal (step S7) of the replacing of enforcement maintenance or trouble unit etc. then, is implemented in and has implemented to safeguard the perhaps running in (step S8) of the stop valve control system afterwards such as replacing of trouble unit.Then, implement and the same operation of step S3, based on this, the storage again (renewal of the curve A of in step S3, storing) (step S9) of the Pressure characteristics (curve A) when carrying out the regular event at initial stage turns back to step S4 then.
As above-mentioned, be illustrated with regard to an embodiment of the invention, but the present invention is not limited to this, can carry out various modification, application.
For example, as other mode of executions, in the demonstration of display device 12, during demonstration among T1, T2 and the T3 can carry out color differentiating by different colours respectively with showing, become and carry out Visual Confirmation easily.
In addition; In an above-mentioned mode of execution; Be provided with big flow three-way magnetic valve 5A and small flow three-way magnetic valve 5B in the solenoid valve 5, but can replace this form, the formation of establishing big flow four way solenoid valve and small flow four way solenoid valve in adopting as other mode of executions.In addition, solenoid valve 5 conducts will be illustrated from the type that the air of air supply source 11 is supplied with to cylinder 3 from energising constantly, but can replace this form to adopt the type of constantly supplying with from power failure.
Fig. 7 is the pie graph of the another one mode of execution of expression solenoid valve 5 formation of establishing big flow four way solenoid valve and small flow four way solenoid valve in having.In Fig. 7, the switching of cylinder 3 is provided with two solenoid valves that become four-way valve with solenoid valve 5 in a main body, can any obstruction among exit orifice OUT1 or the exit orifice OUT2 be used as three-way valve according to the usage difference.Big flow four way solenoid valve 5C and small flow four way solenoid valve 5D inlet opening IN, exit orifice OUT1, exit orifice OUT2, exhaust port E1 and exhaust port E2 separately interconnect, and become each common inlet opening IN, exit orifice OUT1, OUT2 and exhaust port E1, E2 of one are set respectively in main body.Usually use big flow four way solenoid valve 5C.At this moment, small flow four way solenoid valve 5D is controlled so as to and is power down mode, forms all hole plug states that five holes are closed all.Big flow four way solenoid valve 5C and small flow four way solenoid valve 5D become the mode interlocking of power down mode with the solenoid valve of other party when a side solenoid valve is switched on, so both can not become "on" position simultaneously.
Situation about using with obstruction exit orifice OUT1 is example; Under the state that the solenoid A of big flow four way solenoid valve 5C has a power failure, when solenoid B was switched on, air was fed into the cylinder body 31 of cylinder 3 by exit orifice OUT2 from the IN aperture; Thus, stop valve 1 becomes full-gear.In big flow four way solenoid valve 5C, in to the process of an adverse, the mode of other adverse is not carried out interlocking.When keeping solenoid A is power down mode ground when solenoid B is had a power failure, and flow four way solenoid valve 5C becomes all hole plug states greatly, stop valve maintenance full-gear.
Then, when based on the operation signal of the anomaly detection signal of factory installation or not shown urgency stop switch during by 7 pairs of solenoid A energisings of microcomputer, air will be from the IN orifice flow to exit orifice OUT1, but since obstruction stop.On the other hand, the air in the cylinder 31 via the exit orifice OUT2 of big flow four way solenoid valve 5C from the E2 hole to atmospheric exhaust, stop valve 1 becomes full-shut position through load on spring.Thus, in the process to solenoid A energising, pipeline is by urgency stop.In addition, the action of employed small flow four way solenoid valve 5D is too during fault diagnosis.
In addition; In an above-mentioned mode of execution and another one mode of execution; In the full-gear or full-shut position of stop valve 1, form the state of any energising of solenoid A, the B of the big flow three-way magnetic valve 5A that keeps corresponding or big flow four way solenoid valve 5C, but can replace this form; After stop valve 1 becomes full-gear or full-shut position, solenoid A, B both sides' control are become power down mode.In this case, big flow three-way magnetic valve 5A or big flow four way solenoid valve 5C become all hole plug states, so can alleviate power consumption, the full-gear of remain off valve 1 or full-shut position.In addition, if utilize whole hole plug states, stop valve 1 can stop to keep with valve opening arbitrarily.This action for small flow three-way magnetic valve 5B or small flow four way solenoid valve 5D too; So; When the action test of confirming operation test, break down and will turn back under the situation that original standard-sized sheet also do not move, help to keep in this position.
In addition; In an above-mentioned mode of execution; The Pressure characteristics of the Pressure characteristics of actual measurement and curve A, B1, B2, B3 compared carries out fault/unusual judgement, but can replace this form, to the pressure value P 1 of the force value of the actual measurement of any time after the action, the curve A in this moment, curve B 1 perhaps the pressure value P 2 of B2 or B3 compare; If the force value of actual measurement is in the words in the scope between P1 and the P2; Then be judged to be normally,, then be judged to be unusual if be in beyond the scope between P1 and the P2.
In addition, in an above-mentioned mode of execution that the dashed area of Fig. 4 and Fig. 5 is regional as dangerous play, but also can be with not marking hatched zone beyond the regular event zone also as the dangerous play zone.
In addition, carried out being provided with that test is done in laggard action and the fault diagnosis of carrying out the stop valve control system at pipeline, but also can before being provided with, carry out the fault diagnosis of system to factory installation.
In addition; In an above-mentioned mode of execution; The boundary of T1, T2 and T3 during the moment that the action of each parts in the Pressure characteristics begins becomes, the moment of Pressure characteristics bending (t2, t3 constantly) can be detected as the change point of the gradient of the Pressure characteristics in during before and after it, but as other mode of executions; Under the situation that only is difficult to clearly hold, also can and detect with the testing signal of position meter 8 with Pressure characteristics.
In addition; In an above-mentioned mode of execution; The Pressure characteristics on Pressure characteristics of pressing in the cylinder body according to cylinder 3 and failure prediction border carries out normally/unusual judgement, but as other mode of executions, the gradient of the Pressure characteristics in the time of also can be to the regular event during each with corresponding during the gradient of Pressure characteristics of actual measurement compare; If the gradient of the Pressure characteristics of the gradient of the Pressure characteristics of actual measurement during with regular event is compared the words that do not surpass the Grads threshold of predesignating; Then be judged to be normally,, then be judged to be unusual if exist under the situation of the difference more than the Grads threshold of predesignating.For example, if during the gradient of the gradient of Pressure characteristics of actual measurement among the T3 Pressure characteristics during with regular event equate that then be judged to be normally, under the situation that has the difference more than the Grads threshold, it is unusual to be judged to be stop valve 1.
In addition; In an above-mentioned mode of execution; Pressure characteristics through pressing in the cylinder body of keeping watch on cylinder 3 carries out fault diagnosis; But as other mode of executions of the present invention, the placement property that can constitute through the only expression passing of the detectable voltage signals of monitored position meter 8 carries out fault diagnosis.Position meter 8 also can be replaced by positioning work piece or rotating coder.
In this case; That kind for example shown in Figure 8; When the running in of the factory installation of the stop valve control system that is provided with standard, implement the confirming operation test; The timeliness of the detectable voltage signals of the position meter 8 of actual measurement this moment changes, and the placement property C during thus as the regular event at initial stage stores in the storage of microcomputer 7 in advance.For placement property C; The action t2 zero hour from the action t1 zero hour of small flow solenoid valve 5B to cylinder 3 (during T1 '); Detecting voltage is zero, from moment t2 to stop valve 1 from full cut-off to the action t3 zero hour that opens direction (during T2 '), detect voltage and rise so that certain gradient is linear; From moment t3 to the moment t4 that becomes full-gear (during T3 '); Detect voltage with than during more slow linear rising of gradient of T2 ', change and become maximum voltage (Vmax), the variation of this detection voltage representes to begin from the action of solenoid valve the displacement (displacement of the rotational position of valve shaft 1b) of the position till stop valve 1 becomes full-gear.During among the t2 ', meter 8 outputs in position have detected the detectable voltage signals of the rotational position of valve shaft 1b, even but during this period T2 ' be valve shaft 1b rotation, since mechanical play and still can't the rotation of valve shaft 1b be delivered on the valve body 1a during.
In addition, the magnitude of voltage of the placement property C when setting gradient from regular event reduced the threshold value predesignated, by placement property D1, the D2 on the failure prediction border shown in the dotted line, store in advance in the storage of microcomputer 7.
When the action test; Actual measurement to the placement property of position meter 8 be under the situation in the scope between curve C and curve D 1, the D2 decidable for normal, beyond being in scope, promptly be under the situation in the scope between curve D 1, D2 and the voltage zero decidable for unusual.And, during T2 ' be judged to be that decidable is that cylinder 3 is unusual under the unusual situation, during T3 ' be judged to be that decidable is that stop valve 1 is unusual under the unusual situation.In addition, placement property C, failure prediction boundary line D1, D2 when the actual measured value of the detectable voltage signals of display device 12 display position meters 8, regular event, together Visual Confirmation normal/unusual result of determination.Utilize the demonstration of display device 12, the actual measured value of Visual Confirmation Pressure characteristics is positioned at the regular event zone shown in curve A, B1, B2, the B3 and where regional dangerous play is, can predict fault thus.
In addition; In other above-mentioned mode of executions; Fault/unusual judgement is to compare through the placement property to the placement property of actual measurement and curve C, D1, D2 to carry out, but also instead it, to during among T2 '～T3 ' any time actual measurement position meter 8 detection voltage, the curve C in this moment magnitude of voltage V1, curve D 1 perhaps the magnitude of voltage V2 of D2 compare; If the magnitude of voltage of actual measurement is in the words in the scope between V1 and the V2; Then be judged to be normally,, then be judged to be unusual if below V1 or the V2.
In addition, the placement property when the regular event that position meter 8 obtains is not under the situation of straight line, and the placement property D1 on risk prediction border, D2 also can be the characteristics that the low institute of magnitude of voltage of the placement property with than regular event the time is decided the magnitude of voltage description of admissible value.
Claims (6)
1. stop valve control system; This stop valve control system possesses stop valve and control mechanism; This control mechanism has the cylinder of the valve shaft of this stop valve of Spin Control and supplies with and the solenoid valve of exhaust to the air of the cylinder body of this cylinder from the air supply source with carrying out; And control the aperture of above-mentioned stop valve, it is characterized in that, possess:
Pressure transducer, this pressure transducer detect the interior pressure of above-mentioned cylinder body,
Decision mechanism; This decision mechanism be based on through the control of above-mentioned control mechanism carried out from above-mentioned air supply source under the situation that the air of the above-mentioned cylinder body of above-mentioned cylinder is supplied with, by above-mentioned pressure transducer actual measurement to above-mentioned cylinder body in the Pressure characteristics of pressing; Decision-making system normal/unusual and
The Pressure characteristics that storing mechanism, this storing mechanism are pressed in the above-mentioned cylinder body the during regular event at the initial stage of storage system in advance and the Pressure characteristics on failure prediction border;
Above-mentioned decision mechanism; Be judged to be under the situation in the scope between the Pressure characteristics on Pressure characteristics when the Pressure characteristics of above-mentioned actual measurement is in above-mentioned regular event and above-mentioned failure prediction border normally, be judged to be unusual under the situation beyond the scope between the Pressure characteristics on Pressure characteristics when being in above-mentioned regular event and above-mentioned failure prediction border.
2. stop valve control system as claimed in claim 1; It is characterized in that; Above-mentioned decision mechanism; Based on to the energising of above-mentioned solenoid valve constantly or the Pressure characteristics of above-mentioned actual measurement that is carved into action zero hour of above-mentioned cylinder when having a power failure judge above-mentioned solenoid valve normal/unusual; Based on the Pressure characteristics of the above-mentioned actual measurement of the action zero hour from action zero hour of above-mentioned cylinder to above-mentioned stop valve judge above-mentioned cylinder normal/unusual, based on the Pressure characteristics of the above-mentioned actual measurement after action zero hour of above-mentioned stop valve judge above-mentioned stop valve normal/unusual.
3. stop valve control system as claimed in claim 2; It is characterized in that; Above-mentioned decision mechanism; Under the situation that the gradient of the Pressure characteristics during above-mentioned regular event beyond the scope between the Pressure characteristics the when Pressure characteristics of the above-mentioned actual measurement after action zero hour of above-mentioned stop valve is in above-mentioned regular event and the Pressure characteristics on above-mentioned failure prediction border, after action zero hour of the gradient of this Pressure characteristics and above-mentioned stop valve equates, it is normal and above-mentioned cylinder is unusual to be judged to be above-mentioned stop valve.
4. stop valve control system; This stop valve control system possesses stop valve and control mechanism; This control mechanism has the cylinder of the valve shaft of this stop valve of Spin Control and supplies with and the solenoid valve of exhaust to the air of the cylinder body of this cylinder from the air supply source with carrying out; And control the aperture of above-mentioned stop valve, it is characterized in that, possess:
Pressure transducer, this pressure transducer detect the interior pressure of above-mentioned cylinder body,
Decision mechanism; This decision mechanism be based on through the control of above-mentioned control mechanism carried out from above-mentioned air supply source under the situation that the air of the above-mentioned cylinder body of above-mentioned cylinder is supplied with, by above-mentioned pressure transducer actual measurement to above-mentioned cylinder body in the Pressure characteristics of pressing; Decision-making system normal/unusual
The Pressure characteristics that storing mechanism, this storing mechanism are pressed in the above-mentioned cylinder body the during regular event at the initial stage of storage system in advance and the Pressure characteristics on failure prediction border and
Display device;
Above-mentioned decision mechanism; Be judged to be under the situation in the scope between the Pressure characteristics on Pressure characteristics when the Pressure characteristics of above-mentioned actual measurement is in above-mentioned regular event and above-mentioned failure prediction border normally, be judged to be unusual under the situation beyond the scope between the Pressure characteristics on Pressure characteristics when being in above-mentioned regular event and above-mentioned failure prediction border;
Pressure characteristics when aforementioned display device shows the regular event at initial stage of the said system that the Pressure characteristics of above-mentioned actual measurement, above-mentioned storing mechanism are stored and the Pressure characteristics on failure prediction border.
5. stop valve control system; This stop valve control system possesses stop valve and control mechanism; This control mechanism has the cylinder of the valve shaft of this stop valve of Spin Control and supplies with and the solenoid valve of exhaust to the air of the cylinder body of this cylinder from the air supply source with carrying out; And control the aperture of above-mentioned stop valve, it is characterized in that, possess:
Displacement detecting mechanism, this displacement detecting mechanism detects the displacement of the valve shaft of above-mentioned stop valve,
Decision mechanism; This decision mechanism is based on through the control of above-mentioned control mechanism and has carried out from above-mentioned air supply source under the situation that the air of the above-mentioned cylinder body of above-mentioned cylinder is supplied with, by the detected placement property of above-mentioned displacement detecting mechanism; Decision-making system normal/unusual and
Storing mechanism, this storing mechanism be the placement property the during regular event at the initial stage of storage system and the placement property on failure prediction border in advance;
Above-mentioned decision mechanism; Be judged to be under the situation in the scope between the placement property on placement property when the placement property of above-mentioned actual measurement is in above-mentioned regular event and above-mentioned failure prediction border normally, be judged to be unusual under the situation beyond the scope between the placement property on placement property when being in above-mentioned regular event and above-mentioned failure prediction border.
6. stop valve control system; This stop valve control system possesses stop valve and control mechanism; This control mechanism has the cylinder of the valve shaft of this stop valve of Spin Control and supplies with and the solenoid valve of exhaust to the air of the cylinder body of this cylinder from the air supply source with carrying out; And control the aperture of above-mentioned stop valve, it is characterized in that, possess:
Displacement detecting mechanism, this displacement detecting mechanism detects the displacement of the valve shaft of above-mentioned stop valve,
Decision mechanism; This decision mechanism is based on through the control of above-mentioned control mechanism and has carried out from above-mentioned air supply source under the situation that the air of the above-mentioned cylinder body of above-mentioned cylinder is supplied with, by the detected placement property of above-mentioned displacement detecting mechanism; Decision-making system normal/unusual
Storing mechanism, this storing mechanism in advance the placement property the during regular event at the initial stage of storage system and failure prediction border placement property and
Display device;
Above-mentioned decision mechanism; Be judged to be under the situation in the scope between the placement property on placement property when the placement property of above-mentioned actual measurement is in above-mentioned regular event and above-mentioned failure prediction border normally, be judged to be unusual under the situation beyond the scope between the placement property when placement property that is in above-mentioned failure prediction border and above-mentioned fault;
Placement property when aforementioned display device shows the regular event at initial stage of the said system that the placement property of above-mentioned actual measurement, above-mentioned storing mechanism are stored and the placement property on failure prediction border.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010267962.5A CN102384303B (en) | 2010-08-31 | 2010-08-31 | Cutoff valve control system |
| JP2010243284A JP5242659B2 (en) | 2010-08-31 | 2010-10-29 | Shut-off valve control system |
| EP20100193247 EP2423547B1 (en) | 2010-08-31 | 2010-12-01 | Cutoff valve control apparatus |
| US12/959,786 US8925895B2 (en) | 2010-08-31 | 2010-12-03 | Cutoff valve control apparatus |
| KR1020100137920A KR101265986B1 (en) | 2010-08-31 | 2010-12-29 | Cutoff valve control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010267962.5A CN102384303B (en) | 2010-08-31 | 2010-08-31 | Cutoff valve control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102384303A true CN102384303A (en) | 2012-03-21 |
| CN102384303B CN102384303B (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010267962.5A Active CN102384303B (en) | 2010-08-31 | 2010-08-31 | Cutoff valve control system |
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| Country | Link |
|---|---|
| US (1) | US8925895B2 (en) |
| EP (1) | EP2423547B1 (en) |
| JP (1) | JP5242659B2 (en) |
| KR (1) | KR101265986B1 (en) |
| CN (1) | CN102384303B (en) |
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| CN103574120A (en) * | 2012-07-24 | 2014-02-12 | 尹仓植 | Solenoid valve and auto valve having it |
| CN107965610A (en) * | 2016-10-20 | 2018-04-27 | 费希尔控制产品国际有限公司 | The method and apparatus that the test to solenoid valve is assessed via locator |
| CN110418914A (en) * | 2017-03-17 | 2019-11-05 | 金子产业株式会社 | Cut off control valve device, cutting valve control system, stop valve control coefrficient calculation method and stop valve control method |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2423547A2 (en) | 2012-02-29 |
| KR20120021139A (en) | 2012-03-08 |
| US20120048396A1 (en) | 2012-03-01 |
| EP2423547B1 (en) | 2014-02-26 |
| JP2012052652A (en) | 2012-03-15 |
| KR101265986B1 (en) | 2013-05-22 |
| EP2423547A3 (en) | 2013-02-27 |
| JP5242659B2 (en) | 2013-07-24 |
| US8925895B2 (en) | 2015-01-06 |
| CN102384303B (en) | 2014-11-26 |
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